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    <h2><span class="en">Android Basics</span>
        <span class="de" style="display:none">Einführung in Android</span>
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          <span class="en">The AndroidManifest.xml File</span>
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          <li><a href="../guide/topics/manifest/activity-element.html">&lt;activity&gt;</a></li>
          <li><a href="../guide/topics/manifest/activity-alias-element.html">&lt;activity-alias&gt;</a></li>
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          <li><a href="../guide/topics/manifest/meta-data-element.html">&lt;meta-data&gt;</a></li>
          <li><a href="../guide/topics/manifest/path-permission-element.html">&lt;path-permission&gt;</a></li>
          <li><a href="../guide/topics/manifest/permission-element.html">&lt;permission&gt;</a></li>
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          <li><a href="../guide/topics/manifest/supports-screens-element.html">&lt;supports-screens&gt;</a></li><!-- ##api level 4## -->
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              <span class="en">In-app Billing Overview</span></a>
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              <span class="en">Implementing In-app Billing</span></a>
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              <span class="en">Security and Design</span></a>
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              <span class="en">Testing In-app Billing</span></a>
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          <li><a href="../guide/market/billing/billing_admin.html">
              <span class="en">Administering In-app Billing</span></a>
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          <li><a href="../guide/market/billing/billing_reference.html">
              <span class="en">In-app Billing Reference</span></a>
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      <li><a href="../guide/appendix/market-filters.html">
          <span class="en">Market Filters</span></a>
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      <li><a href="../guide/market/publishing/multiple-apks.html">
          <span class="en">Multiple APK Support</span></a>
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  <li>
    <h2><span class="en">Developing</span>
               <span class="de" style="display:none">Entwicklung</span>
               <span class="es" style="display:none">Desarrollo</span>
               <span class="fr" style="display:none">Développement</span>
               <span class="it" style="display:none">Sviluppo</span>
               <span class="ja" style="display:none">開発</span>
               <span class="zh-CN" style="display:none">开发</span>
               <span class="zh-TW" style="display:none">開發</span>
    </h2>
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              <span class="en">With AVD Manager</span>
            </a>
          </li>
          <li>
            <a href="../guide/developing/devices/managing-avds-cmdline.html">
              <span class="en">From the Command Line</span>
            </a>
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          <li>
           <a href="../guide/developing/devices/emulator.html">
                <span class="en">Using the Android Emulator</span>
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        <a href="../guide/developing/device.html">
          <span class="en">Using Hardware Devices</span>
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                <span class="en">Reading and Writing Logs</span>
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                <span class="en">Debugging and Profiling UIs</span>
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  <li>
    <h2><span class="en">Publishing</span>
        <span class="de" style="display:none">Veröffentlichung</span>
        <span class="es" style="display:none">Publicación</span>
        <span class="fr" style="display:none">Publication</span>
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        <span class="ja" style="display:none">公開</span>
        <span class="zh-CN" style="display:none">发布</span>
        <span class="zh-TW" style="display:none">發佈</span>
    </h2>
    <ul>
      <li><a href="../guide/publishing/app-signing.html">
            <span class="en">Signing Your Applications</span>
            <span class="de" style="display:none">Signieren Ihrer Anwendungen</span>
            <span class="es" style="display:none">Firma de aplicaciones</span>
            <span class="fr" style="display:none">Attribution de votre signature <br />à vos applications</span>
            <span class="it" style="display:none">Firma delle applicazioni</span>
            <span class="ja" style="display:none">アプリケーションへの署名</span>
            <span class="zh-CN" style="display:none">应用程序签名</span>
            <span class="zh-TW" style="display:none">簽署應用程式</span>
          </a></li>
      <li><a href="../guide/publishing/versioning.html">
            <span class="en">Versioning Your Applications</span>
            <span class="de" style="display:none">Versionsverwaltung für Ihre <br />Anwendungen</span>
            <span class="es" style="display:none">Versiones de las aplicaciones</span>
            <span class="fr" style="display:none">Attribution d'une version à vos applications</span>
            <span class="it" style="display:none">Controllo versioni delle applicazioni</span>
            <span class="ja" style="display:none">アプリケーションのバージョニング</span>
            <span class="zh-CN" style="display:none">应用程序版本控制</span>
            <span class="zh-TW" style="display:none">應用程式版本設定</span>
          </a></li>
      <li><a href="../guide/publishing/preparing.html">
            <span class="en">Preparing to Publish</span>
            <span class="de" style="display:none">Vorbereitung auf die Veröffentlichung</span>
            <span class="es" style="display:none">Publicación de aplicaciones</span>
            <span class="fr" style="display:none">Préparation à la publication</span>
            <span class="it" style="display:none">Preparativi per la pubblicazione</span>
            <span class="ja" style="display:none">公開の準備</span>
            <span class="zh-CN" style="display:none">准备发布</span>
            <span class="zh-TW" style="display:none">準備發佈</span>
          </a></li>
      <li><a href="../guide/publishing/publishing.html">
            <span class="en">Publishing on Android Market</span>
          </a></li>
    </ul>
  </li>

  <li>
    <h2><span class="en">Best Practices</span>
               <span class="de" style="display:none">Bewährte Verfahren</span>
               <span class="es" style="display:none">Prácticas recomendadas</span>
               <span class="fr" style="display:none">Meilleures pratiques</span>
               <span class="it" style="display:none">Best practice</span>
               <span class="ja" style="display:none">ベスト プラクティス</span>
               <span class="zh-CN" style="display:none">最佳实践</span>
               <span class="zh-TW" style="display:none">最佳實務</span>
    </h2>
    <ul>
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            <span class="en">Compatibility</span>
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            <span class="en">Distributing to Specific Screens</span>
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            <span class="en">Screen Compatibility Mode</span>
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            <span class="en">Strategies for Android 1.5</span>
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            <span class="en">Optimizing Apps for Android 3.0</span>
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               <span class="en">UI Guidelines</span>
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                   <span class="en">Icon Design <span class="new">updated</span></span>
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                    <span class="en">Launcher Icons <span class="new">updated</span></span>
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                    <span class="en">Menu Icons</span>
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          <li><a href="../guide/practices/ui_guidelines/widget_design.html">
                <span class="en">App Widget Design <span class="new">updated</span></span>
              </a></li>
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                <span class="en">Activity and Task Design</span>
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                <span class="en">Menu Design</span>
              </a></li>
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      <li><a href="../guide/practices/design/accessibility.html">
            <span class="en">Designing for Accessibility</span>
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            <span class="en">Designing for Performance</span>
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                <span class="en">JNI Tips</span>
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            <span class="en">Designing for Responsiveness</span>
          </a></li>
      <li><a href="../guide/practices/design/seamlessness.html">
            <span class="en">Designing for Seamlessness</span>
          </a></li>
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  <li>
    <h2><span class="en">Web Applications</span>
    </h2>
    <ul>
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            <span class="en">Web Apps Overview</span>
          </a></li>
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            <span class="en">Targeting Screens from Web Apps</span>
          </a></li>
      <li><a href="../guide/webapps/webview.html">
            <span class="en">Building Web Apps in WebView</span>
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      <li><a href="../guide/webapps/debugging.html">
            <span class="en">Debugging Web Apps</span>
          </a></li>
      <li><a href="../guide/webapps/best-practices.html">
            <span class="en">Best Practices for Web Apps</span>
          </a></li>
    </ul>
  </li>

  <li>
    <h2><span class="en">Appendix</span>
               <span class="de" style="display:none">Anhang</span>
               <span class="es" style="display:none">Apéndice</span>
               <span class="fr" style="display:none">Annexes</span>
               <span class="it" style="display:none">Appendice</span>
               <span class="ja" style="display:none">付録</span>
               <span class="zh-CN" style="display:none">附录</span>
               <span class="zh-TW" style="display:none">附錄</span>
    </h2>
    <ul>
      <li><a href="../guide/appendix/api-levels.html">
            <span class="en">Android API Levels</span>
          </a></li>
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            <span class="en">App Install Location</span>
          </a></li>
      <li><a href="../guide/appendix/media-formats.html">
            <span class="en">Supported Media Formats <span class="new">updated</span></span>
          </a></li>
      <li><a href="../guide/appendix/g-app-intents.html">
            <span class="en">Intents List: Google Apps</span>
          </a></li>
      <li><a href="../guide/developing/tools/aidl.html">AIDL</a></li>
      <li><a href="../guide/appendix/glossary.html">
            <span class="en">Glossary</span>
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    &nbsp;
    
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<h1>The Developer's Guide</h1>
</div>

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    <div class="jd-descr">
    <p>
Welcome to the <i>Android Dev Guide</i>! The Dev Guide provides 
a practical introduction to developing applications for Android and documentation about major
platform features. It explores the concepts behind Android, the framework for 
constructing an application, and the tools for developing, 
testing, and publishing software for the platform.
</p>

<p>
The Dev Guide holds most of the documentation for the Android
platform, except for reference material on the framework API.  
For API specifications, go to the 
<a href="../reference/packages.html">Reference</a>.
</p>  

<p>
As you can see in the panel on the left, the Dev Guide is 
divided into several sections:
<p>

<dl>
<dt><b>Android Basics</b></dt>
<dd>An initial orientation to Android &mdash; what it is, 
what it offers, and how your application fits in.</dd>

<dt><b>Framework Topics</b></dt>
<dd>Discussions of particular parts of the Android framework
and API.  For an introduction to the framework, begin with
<a href="../guide/topics/fundamentals.html">Application
Fundamentals</a>.  Then explore other topics &mdash; from 
designing a user interface and setting up resources to storing 
data and using permissions &mdash; as needed.</dd>

<dt><b>Android Market Topics</b></dt>
<dd>Documentation for topics that concern publishing and monetizing applications on Android
Market, such as how to enforce licensing policies and implement in-app billing.</dd>

<dt><b>Developing</b></dt>
<dd>Directions for using Android's development and debugging tools, 
and for testing the results.</dd>

<dt><b>Publishing</b></dt>
<dd>Instructions on how to prepare your application for deployment
and how to publish it when it's ready.</dd>

<dt><b>Best Practices</b></dt> 
<dd>Recommendations on preferred techniques for writing  
applications that perform efficiently and work well for the
user.</dd>

<dt><b>Web Applications</b></dt> 
<dd>Documentation about how to create web applications that work seamlessly on Android-powered
devices and create Android applications that embed web-based content.</dd>

<dt><b>Appendix</b></dt>
<dd>Reference information and specifications, as well as FAQs, 
a glossary of terms, and other information.</dd>
</dl>

<p>
The first step in programming for Android is downloading the SDK
(software development kit).  For instructions and information, visit the <a
href="../sdk/index.html">SDK</a> tab.
</p>

<p>
After you have the SDK, begin by looking through the Dev Guide.
If you want to start by getting a quick look at some code, the 
<a href="../resources/tutorials/hello-world.html">Hello World</a>
tutorial walks you through a standard "Hello, World" application to introduce some basics of an
Android application. The 
<a href="../guide/topics/fundamentals.html">Application
Fundamentals</a> document is a good place to start learning the basics about the application
framework.
</p>


<p>
For additional help, consider joining one or more of the Android 
discussion groups.  Go to the 
<a href="../resources/community-groups.html">Developer Forums</a> page
for more information.
</p>

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